VEGA - VEGA was developed to create a bridge between most of the molecular software packages, like BioDock, Quanta/CHARMm, Insight II, MoPac, etc. In this tool have been also implemented some features that are useful to analyze, display and manage the 3D struct

VMD - VMD is a molecular visualization program for displaying, animating, and analyzing large biomolecular systems using 3-D graphics and built-in scripting